Hello everyone, This may be posted in the wrong section and if so please accept my apologies as this is my first time on the forums. I don't know if I am doing something wrong but after a while my devices seem to loose connection to each other and the only way to make them see each other again is to close and re-open the sync app on one of the devices. This happens weather I am using the Linux or the Windows versions of sync and usually after the device has been in suspend for a long period of time. For those wondering both devices are on a wired cat5e network that all go through two 8 port TP-Link unmanaged switches. The same problem happens going from Wi-Fi to wired too. There is also a pfSense box running as my router/firewall and has a rule to pass all traffic through the LAN interface. I have also tried disabling the local machines firewall temporarily without any luck, and the only options I have enabled on the folders are "Search LAN" and "Store deleted files in folder archive". If I enable the relay server the problem usually goes away and I do not have to restart the sync app, So I don't know if there are any known problems with the "Search LAN" function as this problem rarely happens if I use predefined hosts. I can also never normally see other wireless clients if I open the sync Android app, It will always only find the wired clients. Any help would be greatly appreciated as I am lost of what to try next.